1XD4

Crystal structure of the DH-PH-cat module of Son of Sevenless (SOS)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Son of sevenless protein homolog 1	polymer	852	99396.0	2	UniProt (Q07889) Pfam (PF00621) Pfam (PF00169) Pfam (PF00618) Pfam (PF00617) In PDB	Homo sapiens (human)	SOS-1

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	198791.9
All*	Total formula weight	198791.9

*Water molecules are not included.